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Redundant control system having a peripheral unit for an automation device

a technology of peripheral unit and automation device, which is applied in the field of peripheral unit of automation device, can solve the problems of system stoppage having a very costly impact, and the redundancy of the system can meet the demands of availability

Inactive Publication Date: 2009-03-31
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables flexible terminal configuration for both input and output operations, ensuring high availability and fault tolerance in automation systems by allowing adaptable operation in various application scenarios, including redundant setups, with continuous signal processing and fault detection capabilities.

Problems solved by technology

These are areas in which a system stoppage would have a very costly impact.
Only redundant systems can here meet the demands placed on availability.

Method used

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  • Redundant control system having a peripheral unit for an automation device
  • Redundant control system having a peripheral unit for an automation device
  • Redundant control system having a peripheral unit for an automation device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020]Designated DAC4 in FIG. 1 is a digital-to-analog converter of a non-redundantly switched peripheral unit 4, which converter is connected via a bus to a control unit ST4 and an analog-to-digital converter ADC4. Via a control lead (not shown here), the control unit ST4 switches a first switch 17a in such a way that a supply unit VE4 can be switched to a first and to a second setting. In the example shown, the first switch 17a is in a switch position as a result of which a constant voltage is applied to a measuring transducer 14 connected to terminals 15a, 16a of the peripheral unit 4. The supply unit VE4 generates said voltage from an output variable of the digital-to-analog converter DAC4, which variable the digital-to-analog converter DAC4 forms from a value routed to it by the control unit ST4. In this setting the terminal 15a of the peripheral unit 4 is assigned as an analog input terminal (reading in of a measuring transducer signal). Owing to a process variable requiring t...

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Abstract

There is described a periphery unit for an automatic device, which can be actuated as an analog input and as an analog output. A number of connections which are to be used as inputs and the number of connections which are to be used as outputs can be adapted in a flexible manner on the respective application from a predetermined number of connections of the periphery unit. As a result, a redundant automatic device wherein said types of periphery units can be used, is provided.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is the US National Stage of International Application No. PCT / EP2005 / 054001, filed Aug. 15, 2005 and claims the benefit thereof. The International Application claims the benefits of German application No. 10 2004 039 698.1 DE filed Aug. 16, 2004, both of the applications are incorporated by reference herein in their entirety.FIELD OF INVENTION[0002]The invention relates to a peripheral unit for an automation device. The invention relates further to a redundant automation device in which said type of peripheral units can be used.BACKGROUND OF INVENTION[0003]It is customary in automation technology for data to be exchanged between a peripheral unit of an automation device and a sensor, for example a sensor for measuring a temperature or pressure, or an actuator, for example an actuator in the form of a positioner for control valves, via analog current signals in the 0-20 mA or, as the case may be, 4-20 mA range. For this pu...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06F13/12G06F3/00
CPCG05B19/0423G05B2219/21117G05B2219/24173
Inventor KREB, WALTERLEHMANN, ULRICHSCHWAB, ROBERT
Owner SIEMENS AG